Researchers have found that obesity can impair the body's natural circadian rhythms, particularly in the cardiovascular system. The study suggests that this disruption can lead to a range of health problems, including impaired heart function and an increased risk of disease.
A recent study found no significant impact of hormonal status on eight distinct voice parameters in women. The researchers assessed 175 voice samples from 35 participants and used computerized acoustical analysis to measure various voice characteristics.
Dr. Larissa Shimoda's research focuses on understanding the mechanisms behind hypoxic pulmonary hypertension, a condition affecting patients with chronic lung diseases. Her work identifies key changes in pulmonary vascular smooth muscle cells that contribute to the development of the condition.
Cardiac stem cell treatment is being explored as an option for treating heart failure. Dr. Bolli's study, SCIPIO, aims to perfect a technique using a patient's own cardiac stem cells to regenerate dead heart muscle after a heart attack. Results show promising improvements in patients' physical capabilities and ejection fraction.
Physiologist E. Paul Zehr uses Batman as a framework to discuss exercise and physical training, illustrating how the body responds to physical discipline. His approach connects science to popular culture, helping students understand physiology better.
Researchers found that mice treated with chromium picolinate had lower levels of albuminuria compared to untreated diabetic mice. The supplement reduced inflammation by affecting IDO, IL-6, and IL-7, suggesting a potential therapeutic effect.
A study published by the American Physiological Society suggests that as body mass index (BMI) increases, so do platelet reactivity and thrombogenic microvesicles, contributing to cardiovascular disease. Higher BMI groups also showed increased traditional cardiovascular risk factors such as blood pressure and triglycerides.
A team of researchers studied California seed harvester ants to understand how colony size affects metabolism. They found that the metabolic rate decreases as colony size increases, but not in a straightforward manner.
Researchers found that secondhand smoke triggers a complex inflammatory response in the lungs of rats, leading to increased white blood cells, damaged lung tissue, and impaired immune function. The study suggests potential implications for treating damage caused by secondhand smoke in humans.
Researchers studied two butterfly species, finding that genetic variables affect their ability to relocate due to global warming. The study suggests that some species may be more adapted to warmer temperatures than others.
Research suggests that high CO2 levels can lead to reduced growth, shell hardness, and increased mortality in juvenile oysters. The study's findings highlight the vulnerability of oysters to ocean acidification, which may have cascading effects on marine ecosystems.
Researchers found that coastal animals have a decreased ability to fight off infection of Vibrio bacteria when exposed to low oxygen and high carbon dioxide conditions. This makes them more vulnerable to infection, especially with injuries or wounds exposed to the water.
By comparing different species and environments, researchers can identify environmental optima and tolerance limits for predicting climate change effects. Tropical porcelain crabs, despite being heat-tolerant, live near their thermal tolerance range and have limited ability to adapt to warmer temperatures.
Researchers warn that increasing global temperatures will lead to devastating effects on desert bird populations, with even minor temperature increases doubling water loss rates and reducing survival times. Small birds may face reduced survival times of up to 30-40% during heat waves.
A study using fMRI found that looking at photos of a former partner stimulated key brain areas involved in motivation, reward and addiction. The brain's attachment system showed signs of recovery over time, suggesting hope for those coping with rejection.
A recent study found a connection between genetic variations of the NRF2 gene and endurance performance. Elite endurance athletes had higher frequencies of specific genetic variants compared to elite sprinters, suggesting that these variations might contribute to their endurance abilities.
A study published in the Journal of Applied Physiology found that the type of food eaten after exercise can significantly impact metabolic health. Eating low-carbohydrate meals after exercise enhanced insulin sensitivity more than eating balanced or low-calorie meals. The study suggests that people can still reap important health benef...
A study by the American Physiological Society found that strength training exercises using dumbbells can improve function and reduce pain in the trapezius muscle of women suffering from trapezius myalgia. The exercises also enhance the muscle's ability to respond quickly and forcefully.
A probiotic bacterium, Bacillus polyfermenticus, has been shown to effectively treat colitis in mice by promoting the growth of new blood vessels. The study found that the bacteria increased angiogenesis, a process necessary for wound healing, and reduced inflammation in affected tissues.
In the early 1960s, a Harvard-educated surgeon and US Air Force General proposed testing women in space due to their lighter weight, lower heart rate, and fewer reproductive system issues. A total of 19 women were enrolled, with 68% passing the tests, earning them the nickname 'Mercury 13'. The data from these women's physiological tes...
A study found that trunk flexibility is associated with arterial stiffness in middle-aged and older adults, suggesting a potential indicator for cardiovascular risk. Regular stretching exercises may slow age-related arterial stiffening, according to the authors.
Researchers found that elephants use two pathways to 'hear' ground-borne vocalizations: somatosensory pathway through feet and trunks, and bone conduction pathway through toenails. This allows them to understand seismic communication over long distances.
Dean Franklin, an engineer, and two physicians, Robert Rushmer and Robert Van Citters, pioneered noninvasive imaging and treatment of the heart. They developed devices that measured blood flow, heartbeat dimensions, and blood pressure without cutting open the body.
Researchers found that the endothelin receptor plays a role in vaso-occlusive pain in sickle cell disease, with males more sensitized to pain. Females have more of the ETB receptor, which may explain better pain control and reduced sensitivity.
The International Conference on Endothelin presented promising results for new endothelin receptor antagonist drugs, which may benefit conditions like kidney disease and pulmonary hypertension. However, challenges in determining the best treatment approach and addressing potential side effects must be overcome.
Endothelin receptor antagonists have shown benefits in treating pulmonary hypertension, resistant arterial hypertension, and proteinuric renal disease. These drugs work by blocking the effects of endothelin-1, a potent vasoconstrictor that can contribute to various diseases.
A new study found that exercise reduces appetite and burns fat first, then carbohydrates, slowing weight regain and overeating. Exercise also prevents the increase in fat cells during weight regain, making it easier to stay on a diet.
A study with hamsters shows that chronic alcohol consumption blunts the biological clock's ability to synchronize daily activities to light. The research suggests that this disruption can have long-lasting effects on the body's internal clock, even after withdrawal from alcohol.
A study has found that divers who hold their breath for several minutes have elevated levels of the protein S100B, which can signal brain damage. However, these levels are temporary and it remains unclear whether prolonged apnea can cause long-term brain damage.
Research highlights the gender disparities in stroke risks, with males outnumbering females by two to one, while women's outcomes worsen with age. Women also face disadvantages in stroke treatment, including lower response rates to tissue plasminogen activator.
A new Army study has improved the ability to predict drinking water needs for troops, potentially cutting costs of operations and improving civilian water planning. The study produced formulations that are 58-65% more accurate than the existing Shapiro equation in laboratory settings.
A new study found that people with stroke impairments experience delays in gripping and releasing objects, but using an arm support device can improve release speed. Active muscle-stretching exercises also showed promise, helping with grip initiation but delaying release.
Research found that Andean women's uterine artery blood flow and oxygen delivery are higher than European counterparts at high altitude, resulting in larger babies. The study suggests genetic adaptation allows Andean mothers to adapt to the high-altitude environment, protecting their fetuses from reduced growth.
Researchers Francois Abboud and Ann M. Schreihofer have unraveled how the brain regulates blood pressure and flow through communication with blood vessels. Their work has led to clinical advances, including a pacemaker-like device to lower blood pressure in hypertensive individuals.
Researchers have developed antedrugs that effectively reduce inflammation without causing damage, surpassing the potency of conventional steroids. The new compounds, isoxazoline derivatives, were five times more potent in binding affinities to cell receptors and reducing inflammation.
Exposure to secondhand tobacco smoke, wood smoke, or cooking oil smoke for as little as 10 minutes affects cardiovascular function in both men and women. Men exhibit a stronger sympathetic response, while women show a healthier parasympathetic response. These findings confirm previous research on the negative effects of tobacco smoke o...
Researchers found that maternal exercise was associated with increased fetal breathing movements and improved fetal heart rate variability. Fetal breathing movements are a marker of fetal well-being and reflect functional development of the respiratory system and central nervous system control.
Researchers created a computational model to examine the role of certain proteins in familial Alzheimer's disease. The model found no link between amyloid beta plaques and tau tangles, but suggested that genetic mutations in proteins and GSK3 over-activation may contribute to the development of the disease.
Researchers found that phosphodiesterase type 5 inhibitors, commonly used to treat male erectile dysfunction, can also relax female rat internal pudendal arteries and improve blood flow. The study suggests that these drugs may be effective in treating female sexual dysfunction caused by inadequate blood supply.
A new study found that oral contraceptive use impairs muscle gains in young women, with lower hormone levels and elevated cortisol concentrations. The researchers also noted significant differences in lean mass gains between OC users and non-users.
A new study examines the impact of social isolation on rats' response to cocaine, revealing that isolated male rats are more susceptible to the drug's effects. The research suggests that early isolation can alter brain sensitivity to cocaine, leading to increased sensitivity in adolescence.
Researchers found that mirthful laughter reduced stress hormones and increased HDL cholesterol in diabetic patients, lowering the risk of cardiovascular disease. The study suggests that adding laughter therapy to standard care may improve health outcomes.
A new study found that coffee and caffeine supplementation reduced oxidative stress and cell death in male mice with ALS, while female mice showed no benefit or even increased markers of stress. The researchers suggest women may want to restrict or switch to decaf products with antioxidants.
A study found that even low levels of lead in children's blood can increase vascular resistance and decrease aldosterone levels, which may predispose them to hypertension. The researchers also discovered increased sympathetic nervous system activity during rest and a paradoxical depression of this response during stressful tasks.
Research reveals that exercising during pregnancy does not require sacrificing time for other activities. Exercisers actually spent slightly more sleep and reading time, while non-exercisers spent more on TV/computer time. The study also found significant differences in BMI and maternal weight between exercisers and non-exercisers.
A new study suggests that astronauts need to modify their workouts to avoid extensive muscle loss during long-duration missions in space. Muscle biopsies taken from astronauts revealed an average of 15% muscle mass loss and 20-30% loss of muscle performance, posing risks to crewmembers' health.
Despite exercising for three months, octogenarian women failed to increase muscle mass, but showed improved efficiency in activating and synchronizing their muscles. The study suggests that it's essential to build as much muscle mass as possible earlier in life to ensure more strength in later years.
Research suggests that air pollution is a significant contributor to heart disease, particularly among the elderly, those with coronary artery disease, diabetics, women, and obese individuals. Exposure to particulate matter can increase blood pressure, activate enzymes that cause plaque rupture, and lead to a heart attack.
Researchers studying the genetics of exercise have identified about 200 genes that play a role in adapting to physical activity. These genes may hold the key to understanding muscle diseases such as muscular dystrophy, and could lead to new treatments for individuals with limited genetic ability to adapt.
The American Physiological Society has awarded $68,000 in travel fellowships to 40 underrepresented minority students and scientists to attend the Experimental Biology conference. The program aims to encourage more students from minority groups to become scientists.